American
| No. of standards for threads |
Symbols of threads |
No. of standards for taps |
| ASME B1.1-1989 |
unified coarse pitch series
|
DIN 352 hand |
| DIN 352 short machine |
||
| DIN 371 machine with reinforced shank |
||
| DIN 376 machine with reduced diameter shank | ||
|
unified fine pitch series
|
DIN 352 hand |
|
| DIN 352 short machine |
||
| DIN 371 machine with reinforced shank | ||
| DIN 376 machine with reduced diameter shank | ||
| DIN 374 machine with reduced diameter shank | ||
|
extra- fine pitch series
|
DIN 2181 hand | |
| DIN 2181 short machine |
||
| DIN 371 machine with reinforced shank |
||
| DIN 374 machine with reduced diameter shank | ||
| ASME B1.15:1995. |
constant - pitch series 8-UNJ
|
DIN 352 hand |
| DIN 352 short machine |
||
| DIN 371 machine with reinforced shank |
||
| DIN 376 machine with reduced diameter shank | ||
|
constant -pitch series 12-UNJ
|
DIN 352 hand | |
| DIN 352 short machine |
||
| DIN 371 machine with reinforced shank | ||
| DIN 376 machine with reduced diameter shank | ||
|
constant -pitch series 16-UNJ
|
DIN 2181 hand | |
| DIN 2181 short machine |
||
| DIN 371 machine with reinforced shank | ||
| DIN 374 machine with reduced diameter shank | ||
|
coarse pitch series with rounded root UNJC for aerospace
|
DIN 352 hand | |
| DIN 352 short machine |
||
| DIN 371 machine with reinforced shank | ||
| DIN 376 machine with reduced diameter shank | ||
|
fine pitch series with rounded root UNJF for aerospace
|
DIN 2181 hand | |
| DIN 2181 short machine |
||
| DIN 371 machine with reinforced shank | ||
| DIN 374 maszynowe z chwytem przelotowym | ||
|
extra-fine pitch series with rounded root UNJEF for aerospace
|
DIN 2181 hand | |
| DIN 2181 short machine |
||
| DIN 371 machine with reinforced shank | ||
| DIN 374 machine with reduced diameter shank | ||
| ANSI B.1.20.3 pipe dryseals |
straight
|
DIN 5157 hand |
| DIN 5157 short machine |
||
| DIN 5156 machine with reduced diameter shank | ||
|
straight intermediate
|
DIN 5157 hand | |
| DIN 5157 short machine |
||
| DIN 5156 machine with reduced diameter shank | ||
| ANSI B.1.20.3 pipe dryseals taper >1:16 |
taper
|
DIN 2181 short machine |
| ASME B94.9 machine |
||
| DIN 5156 machine with reduced diameter shank | ||
| DIN 374 machine with reduced diameter shank | ||
|
taper short series
|
DIN 2181 short machine |
|
| DIN 5157 short machine |
||
| DIN 374 machine with reduced diameter shank |
||
| DIN 5156 machine with reduced diameter shank | ||
| ANSI B.1.20.1 pipe taper >1:16 |
taper for general use
|
DIN 2181 short machine |
| ASME B94.9 machine | ||
| DIN 5156 machine with reduced diameter shank | ||
| DIN 374 machine with reduced diameter shank | ||
|
taper for railling joint
|
DIN 2181 short machine | |
| ASME B94.9 machine | ||
| DIN 5156 machine with reduced diameter shank
|
||
| DIN 374 machine with reduced diameter shank | ||
| ANSI B.1.20.1 pipe straight |
couplings
|
DIN 2184-2 short machine |
| ASME B94.9 machine | ||
| DIN 5157 short machine |
||
| DIN 5156 machine with reduced diameter shank | ||
|
for free-fitting mechanical
|
DIN 2184-2 short machine | |
| ASME B94.9 machine |
||
| DIN 5157 short machine |
||
| DIN 5156 machine with reduced diameter shank | ||
|
For loose-fitting mechanical joint with Locknuts
|
DIN 2184-2 short machine | |
| ASME B94.9 machine |
||
| DIN 5157 short machine | ||
| DIN 5156 machine with reduced diameter shank |
